describe('practice-2-5', function () {

    it("出售金鱼问题", function () {
        var result = sell_gold_fish();
        expect(result).toBe(59);
        result = result - (result/2 + 1/2);
        result = result - (result/3 + 1/3);
        result = result - (result/4 + 1/4);
        result = result - (result/5 + 1/5);
        expect(result).toBe(11);
    });

});